As a scientist, I have access to high-tech equipment that we can put over the side of the research vessel, and it measures oxygen and many more things. We start at the Mississippi River, we crisscross the Gulf of Mexico all the way to Texas, and even I sneak into Texas every now and then and test their waters. And you can tell by the bottom oxygen -- you can draw a map of everything that's less than two, which is the magic number for when the fish start to leave the area. I also dive in this dead zone. We have oxygen meters that we have to deploy offshore that tell us continuous measurements of low oxygen or high oxygen. And when you get into the water, there's a lot of fish. Tons of fish, all kinds of fish, including my buddy here, the barracuda that I saw one day. Everybody else ran this way and I went this way with my camera.